Antartica
Buddhism have it's greatest strength in China, Japan, Korea, Vietnam, etc. It's the major religion in that part of Asia. It was once a major religion in India, too. However, it declined.
Yes.
No, you do not. Many people in the world believe in and commune with God but do not follow any set religion nor religious doctrine.
People are slowly starting to turn their backs on religion and with new religions like the Jedi knight religion, religion has also lost a lot of respect and meaning. No matter what religion you are part of it will eventually "die out" so don't bother. At the rate people have been leaving religion within 100 years most people will not be part of a religion. 200 years only a very small part of the world will believe in religion and in 500 years it will be in text books (or maybe some electronic device that was invented). I myself am not part of religion but for your remaining life if you do choose to stay with your religion, converting people to your religion or persuade people to not leave will help slightly but in the log run your work will be for nothing!
Allover the world
Yes there are Muslims all over the world, but there are a good number of Muslims in Western Europe, but it is not a major religion.
In one way or another, the Church and/or religion has played a major part in ALL of the wars in the world from the beginning of time.
Yes.
The Church is manifested to the world by its teachings and people coming to Church.
There is an estimated 2.18 billion people who identify as part of the Christian population in the world. Christianity is a religion practiced in over 200 countries in the world.
In what part of the world? What country?
no